Full of sorrow; expressing, or intended to express, sorrow; mourning; grieving; sad; also, causing sorrow; saddening; grievous; as, a mournful person; mournful looks, tones, loss
If you are mournful, you are very sad. He looked mournful, even near to tears + mournfully mourn·ful·ly He stood mournfully at the gate waving bye bye
filled with or evoking sadness; "the child's doleful expression"; "stared with mournful eyes"; "mournful news"